add column unique numbering scheme, more efficient selects

app/Models/Revision.php

@@ -2,6 +2,7 @@
 
 namespace App\Models;
 
+use App\Tables\Column;
 use Illuminate\Support\Collection;
 use Riesjart\Relaquent\Model\Concerns\HasRelaquentRelationships;
 
@@ -32,7 +33,22 @@ class Revision extends BaseModel
     /** Included rows */
     public function rows()
     {
-        return $this->belongsToMany(Row::class, 'revision_row_pivot');
+        return $this->belongsToMany(Row::class, 'revision_row_pivot')->as('_row_pivot');
+    }
+
+    /** Included rows
+     * @param Column[] $columns
+     * @return \Illuminate\Database\Query\Builder|static
+     */
+    public function rowsData($columns, $withId=true)
+    {
+        $selects = $withId ? ["data->>'_id' as _id"] : [];
+
+        foreach ($columns as $col) {
+            $selects[] = "data->>'$col->id' as $col->name";
+        }
+
+        return $this->rows()->select([])->selectRaw(implode(', ', $selects));
     }
 
     /** Proposal that lead to this revision */